He could file a motion to suppress alleging there was no reasonable suspicion for the stop. Keep in mind though the officer has to be objectively reasonable in making the stop, not necessarily correct. For example if the cop made the stop for running a red light, and there was a red light camera or other video that showed the driver entered the intersection a .05 of a second before the light turned red, the stop may still be objectively reasonable, even if technically incorrect. Still if there is evidence that he was not speeding, he should contest it regardless, a judge might find that stop chickenshit and the standard of review on the state’s interlocutory appeal of the judge granting a motion to suppress would be abuse of discretion, tough to get reversed.
You MIGHT get a drivers license for refusing (180) or failing (90), but you have a right to an administrative license revocation hearing. I win them all the time. So you can be suspended for failing a blood test with a BAC of 0.08 or more (but not drugs). While the Transportation code allows you to demand a blood test there is no remedy for not accommodating the request. Additionally, it is the cop who can request breath or blood or both, it is their call on the type of sample(s) not the defendant.
It’s called an occupational drivers license.
An acquittal, if you can get one fast enough to matter, bars an administrative license revocation suspension, if you lose your ALR hearing.