Starting February, the stocks of Westport Innovations (Nasdaq: WPRT) nearly doubled. This is an effect of the growing number of truck fleet operators planning to switch from diesel to Westport's natural gas retrofit technology. Prices for diesel fuel skyrocket every week, and this makes the natural gas alternative very attractive.
A similar logic works for cars, where natural gas prices are less than $2 per gallon as compared on an equal basis with gasoline prices. And even if a gas-powered car is still more expensive to buy than a regular one, this gap will gradually close up as production volume is on the rise.
Investing in natural gas transportation companies makes more sense so far crude oil prices remain high. With the barrel of crude returning below $70, your investment in the natural gas powered transportation industry is at risk.