I'm just not spending $45 for a bluetooth that I only need maybe 5 days a year. As far as I'm aware, CA is the only place I go for work that doesn't allow handheld phones. I don't have that money to spare. Unless its the client for a property I'm en route to, its just better not to answer.

But all iphones (besides possibly the original one) have voice commands to call people, so no, you wouldn't need to dial with the keypad.