According to WDW News Today, the track wasn’t changed a whole lot — just shortened. Below you can watch a complete ridethrough of their first trip on the revamped Speedway.
It’s somewhat disappointing that Disney didn’t use the downtime to upgrade to electric cars on the Tomorrowland Speedway, as had been rumored for quite some time. I guess the gas taste in your mouth is part of that nostalgic charm?
The Tomorrowland Speedway in Magic Kingdom
An opening day attraction in Magic Kingdom the speedway was first known as the Grand Prix Raceway until 1994, and the Tomorrowland Indy Speedway until 1999. The Tomorrowland Speedway was based on an international car race rather than the futuristic roadways of Disneyland’s Autopia. The original sponsor was Goodyear, as it supplied all of the tires on the Mark VII vehicles.
The track has been shortened multiple times before, with the first time being in 1974 with the construction of Space Mountain.