Someone Let John Hennessey Tune A Jaguar F-Type R Coupe

Somehow John Hennessey managed to get hold of a Jaguar F-Type and gave it what it desperately needed: more power.

The F-Type (particularly in its R Coupe form, as seen here) may be the most overpowered car on the market, so working the supercharged V8 up to a claimed 623 horsepower (518 at the wheels) only makes sense.

Well, it makes sense when you live in Texas.

Hennessey states the HPE600 Jag does 0-60 in 3.5 seconds and does the quarter mile in 11.57 seconds at 123 mph.