Not necessarily, no. But most of the ones you see have their bonnets up meaning they probably pulled off fairly quickly.
The times when my dad used it was because of a tyre problem (front tyre lost it's tread, then the spare got a puncture and had a blow out!), and second time was the vehicle started to overheat as it had a water leak.
Do you believe that your experience is more valid that those that conducted the 12 month trial period ~ have you called them to let them know?
I would also advise that your dad invests in some basic car maintenance before he causes an accident that may involve someone else.