You have 3 different attributes and 8 different skills that you can upgrade in Rage 2, and it's possible to create a different playstyle by choosing to upgrade different skills. So what do you do if you place your Nanotrites in the wrong skill or attribute? It's actually possible to respec your skills, and you do this by visiting the doctor called Doc Karl in Wellspring.
To find Doc Karl, head inside Wellspring and follow the right path. When you reach the tunnels, follow the tunnel on the left until you see an opening on the right. This is where Doc Karl is located, and for $500 he will reset your Nanotrites. This removes all the upgrades from your skills and abilities, but also gives you the resources back, so you can reallocate them!