Drill First: Axle holes in the body blank should be drilled before doing any shape cutting. Otherwise, it's difficult to drill straight. More Tips
Drilling Axle Holes
Transfer the axle hole locations onto the blank by using a sharp pointed tool such as an awl to puncture through the template and into the wood blank.
Lay the car blank on its side and drill the axle holes. Axle holes should be drilled perpendicular to the car’s longitudinal axis in order for the car to roll freely and straight down the track. A drill press is highly recommended because it makes drilling perpendicular holes a cinch.
the car’s longitudinal axis in order for the car to roll freely and straight down the track. A 
