Now is the time to buy a diesel engine
Just learned these two fascinating facts:
1. The energy density of diesel is 1.12x that of gasoline.
2. Diesel engines are 1.3x more efficient than gasoline engines.
Ergo, the benefit of 1 gallon of diesel v. 1 gallen of gasoline is 46% more distance.
Thus, with $3 gas, diesel should cost $4.38/gallon. But it costs the same, which means you can exploit a pretty hefty market anomaly by driving a diesel car.