What you mean with creating vehicles? Modeling or programming? As for modeling there is no easier way, you just have to do it and for programming, a vehicle in Torque is just a datablock with a list of values like weight, acceleration, steering, drag etc that you set and combined with the model plus correct setup this will be your vehicle. I mean you can create one just now, if you cannot model it, use an existing model or just a cube and play with the numbers.