[.:4:.]

Cruise control on some cars doesnt tie into the transmission. So my 08 fairmont will back down gears to try and maintain set speed. My mums old 01 ml320 benz did the same. My old mans 02 jag didnt. So cruise maintained speed on the flat or going up hill, but on a decline it coasted. Nothing wrong with the cruise in the jag, it was just how it was in older cars even though it should have been better in the jag.