Just find any hot wheels car that is normal size and all you need is some duck tape, a zip-tie, a hot glue gun, the ink tube in a BIC pen, a model rocket engine kit (your choice of engine type, prefered type is a "C6-5") , and a hot-glue gun. And then just launch it off to have it reach its maximum distance and average speed. Also info on how to make a track for the car is included.
Step 1: First Step
Take your Hot Wheels car, make sure it does not have a heavy weight and take any extra things off of it, such as a spoiler, windows, windshields. Anything extra like that you dont need.
Step 2: Second Step
Then, take your BIC pen and take out the ink cartridge and empty out the ink. Once it is empty, put the cartridge through the back window towards the windshield and hot glue it to the car. But make sure the holes on each side of the ink cartridge is wide open.
Step 3: Third Step
Next you are ready for the model rocket engine. Place it one top of the car but obviously and make sure you put enough force on it in order for it not to roll off. . Also, make sure the side of the engine with the small hole is in the back or else it will shoot at you. Keep it in place and ducktape the engine around the car to where you do not cover the wheels and the ducktapes wraps around sidewase, not lengthwise.
Step 4: Final Step
Last but certainly not least, to make the accleration of your car really get to its maximum velocity, get the colored plug and the igniter and put it in to the little hole. Make sure that the side of the igniter with the joining of the wires is on the outside. Now its complete to where it will not its inertia for about a good 5 to 6 seconds.
Step 5: Intro to Track
This track that we used really reduced the friction and increased the displacement, depending on where we set up our stoppers to bring the car to a complete stop. All you need is for this track is a 2x4 that is at least 5 meters long and smooth, two L-brackets for start and finish, screwa to keep those brackets in place, a wire that will fit in the ink tube of the car and long enough to feed through both brackets to tie off. Also a battery with ignition wires to connect it to the car's igniter. A drill with an appropriate drill bit will be required as well.
Step 6: First Step of Track
First, take your wood and place the L-brackets on each side of the track. This create enough net force to keep the car from going off the track with the wire. Then, screw the brackets in, make sure it is really tight. Next, drill one hole in each bracket that the wire will be fed through to hold the car on the track. Then, feed the wire through both holes but make sure you do not feed one end of the wire in yet so you can put the car on the track. Once you put the car on the wire, then tie that end and you are good to go.
Step 7: Final Step for Track
When you are ready, attach the ignition wires from the battery to the igniter on the car. MAKE SURE YOU DO NOT HAVE THE WIRES ATTACHED TO THE CAR AND BATTERY AT THE SAME TIME WHEN YOU ATTACH IT TO THE CAR. Once you attached the car to the ignition wires, stand back far enough with any car, motorcycle, or powersport vehicle battery then touch the appropriate ends and watch it fly.