Electrics and hybrids simply require less service. They die less often, they require less parts and can last longer between servicing. All this means the supply and service chain for automotive industry will take a big hit, and the non-replacement problem will impact the auto manufacturers to lose sales as well.
Solution (from their point of view): Remove one of the biggest selling points of electric motors: zero noise. Force the limitations (i.e., noisy) of gas-only cars onto the nascent electric industry. Create a hubbub about it and make it an issue even if the opposite may be true (people generally like quieter cars).
The Auto industry isn't going to go quietly like the HDD industry did when SSDs appeared (like SSDs, electric-motor vehicles are quieter, faster and have lower failure rates) - they plan on fighting tooth and nail to keep their profits up even if it takes buying legislation.