I think 103 is possible with a Corolla. My '03 Civic is turing about 3,200 rpm at 70 and the redline is about 7,000. So, I’m sure it could get over 100 without much trouble. If this is a heavy fine ticket you should consider a lawyer. Was the ticket for 103 or something lower? The Corolla can not go that fast is not going to fly as a defense. You need to come up with something else.