Thank you for your question.
You have a career to protect, but even if you didn't, the only plea you ever enter at the beginning of a criminal
case is "Not Guilty." Our Constitution says that every defendant is innocent until proven guilty beyond a reasonable doubt and that they are not required to incriminate themselves. They have the right to stand silent and put the state to its proof. So no matter what you did or didn't do here, the only way you can keep all of your rights and choices open until you get fully advised, is by exercising your right to plead "not guilty." You don't give that right up unless you get something in exchange for it, such as a plea offer that will not jeopardize your career.
You are going to need a criminal lawyer. Have him with you on your first date, and he'll be able to guide you through the court procedures and assist you with any decisions you will have to make. The case against you seems overcharged to me, based on the way you described the circumstances. I think that careless driving is probably all the state may really have here. However, a car can certainly be used as a deadly weapon and I am not privy to what the prosecutor has heard from the police and the complainant.
If the charge stands, it is a felony, so for now, at least, you will have to take this case very seriously. If the state drops or dismisses that charge your lawyer should probably be able to negotiate something that won't hurt you.
If you have no idea where to turn to find a criminal lawyer you can get one from your State Bar Association's Lawyer Referral Service
. Their $50 or less referral fee includes a free consultation with a prescreened member of the criminal bar in good professional standing. And if you don't like him there's no obligation to hire him.