What am I expecting?

If he has two prior class two felonies this case is 6-30 years.

Pulled over last week for doing 40 mph over speed limit - haven't received court date in my mail yet

Hire an attorney asap and have them find the court date. This is not a traffic ticket, its a criminal offense.

Can the court drop he charges in IL because of “due diligence rule” if applicable?

The case will not be dismissed. The warrant will stsy active until you are arrested or turn yourself in.

Step son livs w/ us has warrant 4 drug court violation. We have 8 yr ols sis in house, can I hwt in trbl for harboring fugitive

No, but dont be surprised if the police show up at your house looking for him.

Can my mother get into legal trouble for calling 911 and making a fraudulent complaint about a violent act I did not commit?

Yes.

Can i terminate probation early?

Depends on the judge. Ask your probation officer if they will agree. If not hire an attorney.

Its possible but extremely unlikely.

Yes

What happens to my court supervision?

Probably nothing but you will an attorney on the new ticket. It doesn't matter if there was no one on the road.

Do I need a lawyer from the county I got a speeding ticket in I'm fighting? Do I respond that I want a jury or judge trial? THX!

Yes, you need an attorney. This is not a speeding ticket, it is a criminal case. If found guilty as charged you will be convicted and it will be on...