We have four Bob the Builder "truck" characters in total, one was bought by us, the other three Scrambler were given to me by a good friend whose son is older and had grown out of them.

Scrambler is one of the Bob the Builder characters and is a rather cool quad bike, which Bob can ride on.  Bob is the only human character we have and he bends to sit in the quad bike and his hands hook onto the handle bars so he stays put. 

My son loves Bob the Builder stuff and I have a couple of Bob the Builder DVDs which I sometimes let him watch which he has learned the characters from.  He then reenacts some of the stories with his own track characters, singing "Bob the builder can you fix it"!

Scrambler is made from a very durable blue plastic and can be rolled along on his big black, chunky wheels.  He has traction motion, so if pulled back he will propel forward by myself and moveable handlebars, although these don't seem to actually move the front wheels.  He also has a rack at the back of the quad bike which my son sometimes balances Lego on.  Scrambler's eyes also move up and down when he is being moved along which looks quite funky!    

Scrambler is the most agile of the Bob the Builder trucks we have because of his big wheels.  My son rides him up hill and valley, much to my annoyance as he uses the sofa!  Scrambler's features are moulded into the plastic, rather than stuck on with stickers and thus she has stayed in really good condition, he is a durable truck and so far remains in very good condition.

My son loves these Bob the Builder character trucks and I am really glad we have them.  Most of these characters cost around £10, so a quite expensive although I am sure it is possible to pick them up second hand or for cheaper on Amazon if one looked around.  It's good my son has four of these characters as he does play with them interactively.  He is quite obsessed with diggers and building things generally and these toys really do keep him very happy and occupied for long periods of time.