[fmsf]

In many countries it is illegal to change anything with the vehicle without going through a homologation afterwards, unless the parts are already homologated. This happens because it affects security and can be a danger to others and you. The consequences can range from fines to the destruction of the car.

[codetrotter]

Later that evening: “Five killed in car crash. Evidence points to use of seat heaters without paying subscription fee, thus making the vehicle not suitable for highway commute.”