Separate names with a comma.
Doesn't it show 100mpg when you start off in electric mode and the gas engine hasn't come on yet? Technically in that situation it's "infinite...
The secret is to find a truck doing 60 and just follow along at a safe distance behind it. People may think you're stupid for not passing but...
If you install a filter that traps finer particles then you should be careful to check it regularly, since it's more likely to get clogged up....