Well I recently picked up an Assault Squad, 2 Razorbacks(Can be Rhinos) and a Whirlwind(can be a Rhino also) to try and get my army moving. All I seem to be able to do is mount okay'ish defence tactics, and I fall flat on my arse when it comes to assaults or rapid redeployment.
Got them slapped together and had my first game with them the other day, still trying to put together an army list that can deal with most other forces to a point and its far from done.
I played against Gideon's Chaos Space Marines, and to be brutally honest got pwn'd.
Was Annihilation with Dawn of War deployment. He won by about 3 kill points, it ended up being about 10-7 or something.
I managed to use some of my transport ability, but still need to get used to it before it fulfils its potential really.
Will keep experimenting and let you know how it goes.