2/10 must try harder Geoff ....
Grab yourself a map, and\or go for a drive to check for yourself, but if you're building a route you cold start East on the A507, or West on the A427 or A422
I've used these roads regularly in both my daily and the NSX and if you're going early then you can probably build a route to take in all of these ....
So, your mission, if you choose to accept it, is to build your drive out route the finishes with a brunch \ lunch with decent parking.
Would be good to have a decent route to play in this region!
Alternatively, if you arrange for a Saturday you could build a route to Porsche at Silverstone
http://www.porschehost.com/findus.asp?opc=5 where you could have coffee b4 returning to MK?? Just let them know you're coming ... the PH boys often visit.
Good luck, and if you get a route and venue sorted (dont post the route here), I'm happy to get this on the home page to help drum up more attendees
regards, Paul