Dijon...It's worth noting there is a real scene for vintage/retro RC cars too; there are some events that run specifically for them...and they can be worth a fair bit of money. You could cash them in and buy modern kit, or keep them as many do as 'shelf queens!'
Have a look at the Vintage section on here:
http://www.oople.com/forums/forumdisplay.php?f=48
EDIT...just seen you've already been in there!