safety concerns about the carrera gt, the car involved in the crash. experts tell cnn it is difficult for drive, even for veteran race car drivers. martin savidge has more for you. >> reporter: paul walker died in a car most of us could only dream of. a porsche carrera gt, two-seater with three times the horsepower of a regular car, capable of going over 200 miles an hour. price tag? $450,000. exotic car mechanic todd trimble has just finished some routine maintenance on this carrera gt in las vegas. an oil change costs $900. >> mid engine car. you can see the full carbon fiber construction of it. >> reporter: porsche only made around 1,400 carrera gts. to hear trimble telling it, they're disappearing fast. >> they're getting rarer and