I will admit I've only looked back about five pages and didn't see this discussed. There is the off chance this topic maybe taboo on the forums and if so I sincerely apologize.
I want to suggest a Super Car pool power set.
The Super Car powerset grants one access to a Super Car and its associated features. While outside you can mount up in your Super Car and hit the road. While driving your super car you have access to 2 abilities; Turbo Charge and Front Mounted Guns. If it is possible, while in your car you can invite a friend nearby into the vehicle allowing you to drive them around.
Let's get on to the powerset:
Level 4 - Super Scan - "Using a built in personal scanner you send data on your target to your Super Car who then exposes their weaknesses." This ability mechanically would be an enemy debuff -tohit -resistance
Level 4 - Oil Slick - "Your super car deploys an oil slick missile to the target location." This one works like other oil slick abilities.
Level 4 - Super Car - "Summon your Super Car and hit the road." This ability, when used outdoors, replaces the player character with their Super Car. The Super Car confers a +spd +def bonus. If possible, a Super Car user should be able to invite 1 passenger. While in your Super Car you have access to 2 abilities:
-Turbo Charge : "Put the pedal to the metal" +spd +jmp
-Front Mounted Guns: Fires a cone of damage in front of the car
(While indoors "Super Car" becomes RC Bomber: "Take control of an miniature replica of your Super Car that is armed with a bomb. While using this ability your character is left vulnerable controlling the RC Bomber.)
Level 14 - Field Kit - "No Super Car is complete with an emergency medical field kit." This would be a Res/Heal
Level 20 - Full Ordinance - "Your Super Car locks onto the target and fires everything too that location." Big AOE.
I figure, one of the major problems with a Super Car power set is you can't take the car into an indoor mission. So I worked to design most of the abilities to be something your car could theoretically launch into the building from outside or in the case of Super Scan, your just communicating with its computer.
Optimally, we would be able to design our Super Car's looks, like our hero, but if that is an obstacle that prevents this from being considered maybe give us a few Super Cars to choose from when we pick the ability. This Super Car format could even translate to Motorcycles (Don't wanna leave all our Ghostriders hoofin it.) I do hope you will consider my proposal and I invite any suggestions that may help make Super Cars(Bikes) a viable option for the game.
Letting my imagination get the better of me, imagine if this happened and lead to each faction getting a new enemy type to terrorize the roads. I could see the Trolls riding around in a Monster Truck Jeep with a few dudes hanging off like 40k Orkboys lol.