It is indeed Exposure by Susan Andersen, my favourite book of hers (so far. I just started Coming Undone but it will have to be pretty good to beat Exposure.)
Hearty congratulations Nath!!
And here are the rest of the clues - since I worked so hard figuring them out *g*
He has and has always had, big mother problems
She is good with cars
He is named after a Very Famous Entertainer who performed in Vegas
Her daughter is adorable and she is fwee
He has a hook instead of a hand due to his injuries.