The "Eject Button" Jump challenge is one of the hardest jumps in the game, and requires a car that is made for jumping and some practice and luck with the ramp. A good car to use is the Porsche Panamera Turbo with the Offroad build. Mainly go for jump speed cards. These will increase your airtime, and you should get it above 9 or even close to 10. The "Eject Button" Jump is especially difficult because you have to hit top speed while going against traffic and squeezing through a narrow spot to hit the ramp. This takes some practice.