Nice find at that price. Yes these cars do not coast. In fact, with the Cruise control engaged, they will downshift automaticaly to slow the car to your set speed. A verynice feature in the mountains.

The drone sound you hear is normal, especialy in the coupes. SRT or NA they do amplify any tire or gear noise from the rear. Normal. Also the exhaust drone is heard a specific speeds and can be an issue for some. Changing the resonmators (or replacing deleted ones) can reduce this common issue with the Crossie.

My wife's SRT6 drones at 65 MPH but she nevr drives that slow so it is not an issue., Except in New York and New England where 70 MPH is verboten.