Port Isabel, TX, to Huntsville, AL, drive

I combined these data sources for the following chart:

• Tesla App invoices - downloadable CSV
  • Charge kWh
• TezLab trip records - downloadable CSV
  • Accurate start and stop times for each segment
• Visa charge records - downloadable CSV
  • What I actually pay

DESCRIPTION

• Started drive at 8:30 AM, with dark green bar, after free charging at walking distance L2 chargers.
• Kingville SuperCharger at 10:34 added 25.87 kWh, dark blue "+"; Visa billed $9.45, red double "+", with; start and end charging sessions marked between "++".
  • Subsequent SuperCharging session follow the same protocol.
  • Session charged to give a 30-40 mi reserve to the next SuperCharger.
  • Roughly equal number of V2, 150 kW, and V3, 250 kW chargers.
    • My 2019 Model 3 has an initial peak rate of 178 kW.
• State boundaries are light blue verticals with State abbreviations of each border.
• Last segment, light green bar, longer than expected 'cat nap', those miles are replaced by charging at home, $0.12/kWh which shows up in monthly Visa bill, not the SuperCharger Visa.
• Trip 1,170 mi, with FSD and Tesla routing
  • Visa charges billed, $90.94, Tesla App totaled $101.95
  • SuperCharger rate, $90.94 / 1,170 = $7.77 per 100 miles
  • 1,170 mi / 23.5 hours ~= 50 mph, block-to-block speed

LESSONS LEARNED

• Full Self Driving makes a safe "all nighter" possible.
• Longer than expected "cat nap" at end suggests a motel at ~500 miles makes more sense.
  • A 12 hour driving shift with FSD or AutoPilot is entirely practical.
    • Commercial truck drivers are limited to 11 hours of manual driving.
  • Last segment, started at a high SOC, 90%, due to longer 'cat nap.'
    • Cost embedded in utility bill at $0.12/kWh versus $0.32/kWh SuperCharger rates.
  • A bed, hot shower, free charging, and breakfast makes the next ~500 miles much nicer.
• Free charging at the start with an affordable, $0.12/kWh, at the end reduces the SuperCharger road costs.
• With a peak charge rate of 178 kW, the slightly longer V2 sessions do not make forcing V3 stations critical. If convent, use a V3 but the vehicle charge limit is less than what a V3 can provide.

This trip combined three data sources to give an accurate view of long distance, EV driving. Adding the vehicle charge curve can give a better cost and time model.

Bob Wilson

 

Is there something wrong? My browser shows only one post.

Bob Wilson

 

• You stopped 9 times for fuel not counting the last stop at home. Total time consumed during those stops? Or average time?
  • I counted 10 stops.
  • Raw data in seconds
    • Sec
      983
      1,407
      1,350
      775
      772
      1,386
      1,460
      1,538
      1,208
      1,823
• Looks like your number of stops would about match mine. Fueling only 4 times.
  • You would take 10 stops so only 4 of them involve fueling?
  • In 1,170 miles, 4 stops run about 292.5 miles per segment?
  • With EVs, we combine charging with other reasons for stopping (i.e., biology)
• Looks like your fuel costs matched my hybrid fuel costs.
  • $7.77 / 100 miles ~= ($90.94 / 1,170) * 100
  • Gas @$3.638/gal nation average, ~2.14 gal / 100 miles or equivalent 47.6 MPG
• Looks like your depreciation exceeds mine.
  • Until I sell my car, depreciation does not apply and I'm not selling.
  • Capital cost if the car disappears on June 6
    • Purchase: $24,000 ~= $42,000 - $18,300 trade-in
    • Ownership: + 5 years
    • Straight line depreciation: $4,800 / year to date
• I wonder at the wisdom of posting that you did a 24 hour drive. In the future (and hopefully never) if a lawyer should get a hold of that it might not be to your favor.
  • They haven't met my lawyers:
  • Given commercial truck drivers are limited to 11 hours per day, changing to 12 hours per day with Full Self Driving makes sense.
    • Tesla safety reports AutoPilot is ~6x safer than USA manual driving.

My experience is an EV can pretty well do everything an ordinary gasser or hybrid does but differently. The key is to overlap charging with other reasons for stopping.

Bob Wilson

 

Can you read this spreadsheet with the raw data?

Bob Wilson

 

Having bought FSD in Oct 2019, I have a lot of 'hands on' time. Even the early Autopilot paid for itself the first month when I suffered a medical problem under treatment:

• AutoPilot is best learned with some mentoring that Tesla is trying to address.
• Full Self Driving especially needs mentoring.
• A retired engineer and operating system programmer, my habits make 'integration and test' second nature.

There are no words that can adequately replace mentoring. For FSD, it means a pair of sessions, about an hour each, hopefully on two subsequent days. You drive and a second observer passenger while I mentor from the front, passenger seat. This type of mentoring can solve multiple problems including the remaining, latent defects. Once you know what they are, it becomes second nature to deal with them.

Bob Wilson

ps. If anyone within say 500 miles would like FSD training, send me a PM of where and when. My fee, dinner but I won't turn down a night on the sofa.

 

Well guess I'll have to 'get a horse.' God forbid that I ever become an enemy of change:


A life well lived:


I've known people whose imagination died before their 20s. Truly, the walking zombies who live among us.

Bob Wilson