I had seen the World Race and Acceleracers before it and I checked out the series and I think Battle Force 5 is a perfect replacement of The Highway 35 canon.
It has an amazing Plot, Characters and Vehicles. It is a Science Fiction Racing series, the concept of it is that some world-famous race car drivers race Aliens in alternative Dimensions over a Battle key that can be used to open portals from the Zone. The First Season focuses on then racing against Savage mutant animals and Alien Robots. This season is mostly filler and introduces some cool Battle Zones and has a lot of character development. In season 2 we learn more about the aliens that created the Battle Zones called sentients and the team has to fuse their vehicles to stop a warlike faction of them. This season has a good plot and explains everything. In a last 2 episode special, we learn the origin of the sentients and the team has to stop the Rock Monsters who created then from retaking their home world. This is a good concept, shame only Hot Wheels can come up with it. I love the concept of interdimensional racing, I'm surprised nobody has used this concept in a tv show since this series ended. And this series was amazing the background the concept the characters.