vehicles

Hello, everybody! I'll make this quick and short--I am looking for a modern vehicle set that replaces the default vehicle set in the game. Every search result turns up a tileset and not a character set. I just want to do a modern inspired story with modern vehicles.

Good day! I've been looking for a sprite sheet or at least a tileset for one of those double decker buses which go around the streets at U.K. They kind of look like the one attached below. Any help, from pointing me to the right direction of where to find it, or a helpful artist out there...