Some thoughts and ideas after doing the 500 last week, hope it's of use:- 1. Don't do the single track roads (Applecross, Lochcarron, Kylesku to Tongue etc) in groups larger than 2 cars; the passing places accommodate 2/3 vehicles at best and you will be in a world of frustration if you run together in a group. 2. Other vehicles will let you overtake in the passing places but please do the same for others; the fastest car we met was an 04 plate PT cruiser driven by a local 3. Don't worry re fuel. We took spare cans and never got close to needing them filling just north of Inverness, Ullapool and Wick 4. Book accommodation early, we booked in Sept (even earlier than I had remembered) and places were filling up then 5.We went clockwise which was a good idea as we covering route in 2 days. This meant we had the hardest, most tiring bit first. If you do the same, make Ullapool your overnight; the east coast roads are much less demanding than the west 6. Lastly, food and drink prices are on a par with London, be prepared! 7. Enjoy it, the scenery is Lord of the Rings esque