When you first look at this, you think it does some space warping or something complicated. But all you have to do is put the throttle to 100% and activate group 1 as soon as your fuel is around 50-70% and magic happens.

If your wondering what the weird design was for (no I'm not over-complicating myself) the other 2 engines are to let things warm up (as in the time it takes the engines to get to full thrust) and the odd wing design is to have the part that holds you back 1) move away with all the thrust and 2) actually fly off for a short time (yes flying isn't permitted in the land speed record but if it's not attached to your cockpit, that doesn't apply)