Tesla has quietly launched new – much cheaper – Model S and X variants with a shorter quoted range. Standard Range Teslas are around $10,000 less than the base model, but with ranges cut by 80 and 79 miles, respectively. Both cars are half a second slower 0 to 60, so you might expect your overall responsiveness to drop as well. It’s not clear if the vehicles are the base models with some of the capacity software-locked, or if there’s really a much-smaller battery under the floor.