I'm deciding between buying a spare, using a tire repair kit, or relying on road service. Tesla says (Roadside Assistance): Flat Tire Damage to the wheel or tire that causes flat or unsafe driving conditions. Coverage: Flat tire services are provided for up to 50 miles. What does the "50 miles" refer to? That's how far they'll tow you if they can't fix the tire? Will they tow you home? To a tire store? Only to a Tesla center?? Thanks.