To get Tesla's full self-driving capabilities, you'd have to pay between $5,000 and $10,000 for an upgrade, depending on the package you choose. The company is offering some of its employees the chance to get it for free, though -- so long as they're willing to share around 300 to 400 hours of driving feedback, that is. In an internal email obtained by Bloomberg, company chief Elon Musk is asking around 100 to 200 employees thinking of buying a Tesla to join an internal testing program for the automaker's full-fledged autonomous system. Obviously, this isn't an employee perk everyone can take advantage of, since it's widely believed that employees don't get discounts for a new car. But those who were going to buy a Tesla anyway can either get the full self-driving suite for free by the end of next year or to get a premium interior at no cost.