Re do it. Try to get the car as level as possible. Once done correctly, spinning, put in manual mode, then put in 6th gear, then gas and press right arrow. 20,000 points will give you $1,000, which is the max. Anything higher than 20,000 points you're wasting your time.
You don't have to leave gust stop acceleration till it it goes away then accelerat again till 20k points and repeat and I found that the El Camino maxed out works best for this glitch