Porsche Penske Motorsport enters Detroit so-far undefeated in the GTP class, with the No. 7 Porsche 963 of Nick Tandy and Felipe Nasr out front ahead of teammates Mathieu Jaminet and Matt Campbell, ...

Aside from bigger brakes and some small appearance items, the Ultimate Edition isn't too different from a normal IS 500.

Among the IS 500 Ultimate Edition’s specific touches are red Brembo brake calipers and 19-inch forged alloy wheels, finished ...