When we first got to the track around noon, we were told it was closed due to a crash the previous day. The crash had spilled diesel along a kilometer or so of the road, making it dangerously slick. Fortunately, they had been working on cleaning it up, and the track would open around 2pm.
So we called up the wonderful folks at Rent Racecar and arranged to come by and rent a car for a half day. Thankfully we would not need to drive our little rental Mercedes A180 around the track. Rent Racecar has quite a selection, but only a track-prepared BMW 3-series wagon and a Volkswagen R32 were available. I would have much preferred the R32, since the BMW was rear wheel drive, but another customer had already chosen the R32 (an all wheel drive car). Fortunately, Theo (the proprietor) was able to convince them to switch with us.
After handing over €390 and signing the appropriate liability paperwork, we were off to the track...