When my dad and I were heading to pick up my amp somewhere, something strange occured. The left rear wheel blocked. It didn't move at all. When my dad tried tried to drive, the wheel just slipped along. After some tweaking with the handbreak, the wheel deblocked. Obviously there was something wrong with the handbreak. My questions are; what caused this? Mind you, the car is 12 year old. Is it dangerous when driving? Can the same thing happen at 70mph?