2000kv means 2000 rpm per volt..so a 8 cell will be 33.6volts so 67.200 rpm no load..good luck getting to 150 mph...isn't that like a new world record for rc .I think so..I have a few Drag cars 2 1/6 scale 2 1/10 scales and a few 1/16 and 1/18 scales I run 132 feet and 500 foot just for top...