Review for LEGO set 6648 Mag Racer from Brickipedia
“The racer is identical in design to the ones included in 6551 Chequered Flag 500, only the colors are different. The car has a Octan symbol on the tail, which implies it is sponsored by that company. It carries the number "5," and features a spring suspension system on both... More axles. The car is red and white, and has a translucent blue windshield and small yellow flag attached to the back left of the car.”
Full review at brickipedia.fandom.com