Fernandez leaves Vancouver hospital

The Mexican was detained overnight after complaining of pain in his right hip. The multi-car crash briefly stopped the race.

CART's chief doctor Terry Trammel said: "Adrian has a very severe bruise on his right buttock and an insignificant hairline fracture of the left pelvis. We are immediately starting therapy and rehabilitation beginning tomorrow in Indianapolis."

Trammel will make a decision later this week on whether Fernandez will be fit to race at Mid-Ohio on August 11.

"Obviously I am in a lot of pain in my hip and lower back," Fernandez said. "The impact of the crash penetrated the chassis. Having that Kevlar seat saved me. I was compressed inside the cockpit. It was hard to breathe and extremely painful.

"On the accident, Patrick Carpentier spun and [Alex] Tagliani locked up. I hit him from behind. The track was blocked and my car went far right. I only remember Bruno [Junqueira] hitting me at tremendous speed, and a lot of pain. It was one of those things."