(Updates to add Mercedes statement in paragraph 6)California is one of Tesla's largest markets, accounting for 16% of the carmaker's global deliveries last year, according to Reuters calculations. Other systems currently on public roads such as Tesla's Autopilot or General Motors' Super Cruise are classified SAE Level 2, which handle some driving tasks but require drivers to pay attention at all times. Earlier this year, Mercedes-Benz also received an approval to deploy advanced automated driving systems on Nevada's roads