Can you cross the Tanzania/Kenya border at the Serengeti and head into Masai Mara? I want to know if it's possible to cross the border from Tanzania into Kenya where the Serengeti and Masai Mara intersect? We will have a rental car and can't find any information if there is border post at this location. Anyone know? Is this the best way to go or is there a better way to get from Tanzania to Kenya?