What's the main difference between those two system? I heard that Camry has a true neutral gear, but Prius does not. If I get 50 mpg on Prius, how much I can get on Camry? Is the hybrid battery same reliable as Prius'? Looks to me, used Camry price is very close to none hybrid version now, maybe only $1000 difference. Used Prius still carries a high premium.