Only bothered with TOTB4 last year, and that was only because I was marshalling......hardly got to see any car-action (the last half of the Finals, and 5 minutes during "lunch", that was it), the "free food" policy had been changed to a piddly little £5 voucher that didn't cover a decent lunch, never mind dinner aswell like in TOTB3, and the hassle from people who didn't understand the "no competitor/support pass means you park in the public parking space" rule was unbelievable (wouldn't have minded, if we actually got paid for it).
So, this year? No car-shows for me...