Thanks a bunch guys, you've all been quite helpful. I got an e-mail from Rail Europe saying exactly what Gilles said about not needing reservations between Le Mans and Tours, so that's good to know. Also found the SETRAM Web site by accident and I see that they're offering bus service from the track to the city until 6 p.m. on Sunday, which should work out perfect. No worries!
Hope to meet some of you there! (I'll try to find the party at 9 p.m. Saturday) Stop me if you see me ... I'll be wearing a shirt that says "Race Elkhart Lake."
E. from Wis.