I am about 10 days in on a 9500IX.
If I use highway mode, I understand that that the 95000IX is using the highest level of sensativity possible. If you are in Auto mode, the KA & laser is not reduced, but the K&X are based on your speed (GPS enabled).
Is the idea that if you are going the speed limits (55 - 65MPH) you don't need high sensativity? Is the unit smart enough to kick in when it detects that you are are at higher speeds?
To boil it down... highway mode only on the highway, or is it safe to run in auto mode when you have a GPS unit that knows how fast you are going?