When a driver's car is destroyed or abandoned in a Racing Realm, their car will be left behind and they have to use a replacement. Cars replaced include Kurt's Slingshot, Taro's Roadrunner, Nolo's Synkro, Porkchop's Jack Hammer, and Wylde's Spinebuster.
However, some drivers are seen with *identical* copies of cars that were destroyed, most of which didn't even make it out of a Racing Realm. Monkey's Rolling Thunder was blown to pieces in the Storm Realm, Shirako's Bassline fell in Cliffside, and Vert's Power Rage was abandoned in Swamp. This implies that these drivers have multiple copies of the same car.
It can be argued that Power Rage was designed by Dr. Tezla, who already had the resources to rebuild the car for Vert. However, it doesn't explain how Monkey and Shirako had their cars rebuilt, since they've existed long before knowing Tezla.
However, some drivers are seen with *identical* copies of cars that were destroyed, most of which didn't even make it out of a Racing Realm. Monkey's Rolling Thunder was blown to pieces in the Storm Realm, Shirako's Bassline fell in Cliffside, and Vert's Power Rage was abandoned in Swamp. This implies that these drivers have multiple copies of the same car.
It can be argued that Power Rage was designed by Dr. Tezla, who already had the resources to rebuild the car for Vert. However, it doesn't explain how Monkey and Shirako had their cars rebuilt, since they've existed long before knowing Tezla.