How about a motocrosser with it's engine turned "backward"?
Motorcycle.com:

Yamaha’s new YZ450F is set to turn the motocross world upside down. More accurately, the YZ turns it backward!
In a bold move, Yamaha engineers have built a new motor that has its intake at the front and its exhaust exiting out the rear, similar to the unique-but-ill-fated Cannondale from a few years ago that is now sold in upgraded form as an ATK.