If Tron were opening this year and Minnie Vans were debuting right along side it, i'd think it more likely. For all we know, the Minnie Van service may not even be around by the end of 2017, never mind 2021.The point I was making was that they don't have to be exclusive deals. They may offer to sponsor one attraction in trade with Disney for cross promotion with another avenue, such as mini vans, where they'll plaster their logo across all promotional info worldwide not just in the parks.
It's just too loose of a connection imo.