I need flights and a car (mini van) what is the best way to get these.

2 Adults, 1 teenager and 1 child
27th Dec to 13 Jan 06
Mini van + extra driver and petrol
DIRECT flight from London to anywhere except Miami (fed up of the 3.5 hour drive)

Should i do the car seperate, how do i try US companies (always use Virgin or BA)

Thanks

Doug