If you can't afford to go to the track, you should sell your performance car and buy a camry. You can't afford a performance car, and you can't afford a speeding ticket. Autocross is less than $40 a day, a speeding ticket is $100+ to start...
And think of the time you'll save by going to the track, rather than having your license suspended and your car confiscated for street racing. Then you'll be able to use that spare time riding a bus, or walking to work.