SPRINGFIELD — Private car owners can rent their vehicles to others via phone apps, but unlike a traditional rental-car agency, neither the car owner nor renter currently pays taxes or faces rental regulations.But state lawmakers from both sides of the aisle are pushing for regulations on peer-to-peer companies once again this session after their measure was vetoed by the governor over the summer.Senate Bill 2641 would require peer-to-peer companies that allow car owners to rent their personal vehicles to abide by the …