Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download Monster Truck Pack Free.
Monster Truck Pack v1.1
This is a set of 8 Monster Trucks for Mobile.
All cars include interior and underside detail.
Each car is around 6k polygons with tires, interior and driver.
Driver model is a seperate mesh.
It is embedded to the LOD1 models to save draw-calls, however.
A garage-scene is included, it uses a unlit textured material so it is very lightweight to draw.
These are optimised models so doors, hood or trunk DO NOT open.
Wheels have spindle nodes for easy animation.
All cars have logical hierarchy and naming.
All textures are layered .psd. 2k for the main body as source data.
Guides are included for easy painting.
Blank paintjobs are included.
Three skyboxes included, Garage, Generic Sky, and City Lights.
LOD1 models are included, which drop the transparent windows for far-away drawing, or just as a low-performance alternative.