XBT

The XBT Experimental Battle Tank is a Tank/Car Hybrid, featuring a turret that does not need to be operated by a second crew, making it good for hit and run tactics. It's first use was destroying an entire Skaven base, killing 25 Million Skaven. It took 10 days for it to do it, but it has proved it's efficiency in battle and the Imperium Of Man want to mass produce it.

Note: There is no official Miniature for the XBT and it is not a canon Warhammer 40K Vehicle, but perhaps one day there will be, it's basically like a single seater version of the Warthog with a full canopy and everything.