Brian,
Chris and JTQ have mentioned the fork brackets from Wiggle, if you have a look at these, then also look at the bike bags on the same website.
I have two dhb Marsden wheeled bag sets and these are used to keep mine and the wifes Felt MBs inside the van.
The main bags are wedged between the front seats and the wheel bags slot in between them. The bags are padded so they do not scuff the upholstery.
When we are not using the bikes, they stay in their bags and are hung up in the garage at home.
They do seem expensive, but I bought mine when they had a 50% discount promotion on,
best regards, Martin