toooo long?!.. I was fully upgraded by level 30 or so.. got to be 40.. maybe 50, nope.. 60?.. 70?.. maybe it has something to do with the debt.. I'm nearly at 10mio anyway..Ok, then 100... ahhh, WTF, where is this final boss??
once you have upgraded the fuel tank and rockets all you need is to get as high as you can from start and press full throttle in one direction... started at 30k feet haven't touched a button since now 25min later at 55k ft still running lol