With all the attention on EVs, we can forget that plug-in cars probably aren't the only answer for cleaner driving.

Four in five cars sold in the United States last year were either SUVs or pickup trucks. That's a far cry from even the 1990s when that number was closer to 25% of all sales.

While it was successful on the track, it was never a big seller, likely due to its high cost. A total of 11,000 units came ...