Just a bit of fun - Be gentle with the keys for best control! Up & Down Keys - Accelerate & break, then again to reverse. Left & Right Key - Turns steering wheel (release to let it return back to the centre).
Articulated bus version, credit to griffpatch for the project and someone who I forgot who had the bus sprite. Non-articulated version: http://scratch.mit.edu/projects/17793916/ Lorry version below