Lets try this approach!..

[rootar]

i send my trucks 65 feet all day long, and ive seen others jump fullsize fmx ramp setups just as i do at my house, so Your gonna have to go over a 100 thats forsure and youll prolly need 50-55mph to do it along with atleast a 6 foot ramp id suggest a 30-35 degree final angle other wise youll be going so high your never keep it on its wheels when landing.....

[BL_RV0]

I've beaten that with a rocket-motor powered RC10GT. I think I took a video of it. I had a servo controlling the lighter and the lighter would light all the fuses at once. There was a total of 25 rockets on the car. I was running a rollcage. I clocked the car at 74 before it hit the ramp. It flew 192 feet.