(before I retired we worked with him on the automatic transmission upgrade) http://www.caranddriver.com/features/tank-vs-crank-how-to-drive-a-tank-page-2
Saw him driving a vintage open wheel roadster heading north on the US-101 several years ago. Did not recognize the make/model, but it was ALL engine.
If it was BIG, shiny (like aluminum) it might be his Tank car - it a V-12 with a 30 (not 3.0, but thirty) liter displacement:
http://www.popularmechanics.com/cars/jay-leno/4206704
BEAST! It has an engine from an M-47 Patton Tank.
(before I retired we worked with him on the automatic transmission upgrade) http://www.caranddriver.com/features/tank-vs-crank-how-to-drive-a-tank-page-2