A 36-year-old man and his girlfriend were hospitalised after he smashed his Ferrari into a concrete barrier early on Wednesday in Samut Prakan.
Rescue workers had to cut Sarawut Sereetoranakul, a businessman and driver for the PSC Motorsport team, from the wrecked supercar.
He suffered a broken leg while his companion, actress Sananthachat Thanapatpisal, aka Fon Hormones, 25, was treated for chest pains.
Sarawut told police the vehicle felt like the car slid on a patch of oil, causing him to lose control and crash into the concrete barrier.
Thai media report that police are investigating the cause of the crash.