It is an exceptionally good fun trip, particularly if you can get a group of mates together. I would thoroughly recommend it to anyone who's into cars.
For all the nice cars though, the car that made the trip most fun was the Saab. It belonged to two guys from Yokohama who bought it for £600 and decided to see if they could get it there, around one lap, and back again. It was very 'TopGear' style and it suffered many breakdowns and heavy oil usage - but it made it a challenge, very funny and gave everybody a good laugh.
It may have burnt more oil than we burnt fuel... but you'll be pleased to know it did make it there, it did manage a lap, and it did make it back!