In no particular order (cos I can't read and write at the same time
)...
The 660 has...
Route Preferances...
Faster time
Shorter distance
Off road
Avoidances...
U-turns
Motorways
Tollroads
Traffic
Ferries
Car share lanes
Unpaved roads
Seasonal closures
Custom (where you can specify an area or a road to avoid)
Usage mode...
Motorcycle
Automobile
Pedestrian
Scooter(?)
Off road
I have mine set to fastest route, motorcycle usage (which gives me a usable 'dashboard'), avoid unpaved roads (after a few 'excursions').
The reason I use the thing all the time (in either car or on bike) is because I can't remember ALL the speed camera locations in the country, not to navigate me.
The way I use it mostly is not navigating, but if I need to nip from Ledbury to Northampton in the car in the rush hour I want it to tell me about traffic (I have the traffic dongle) and auto-route me. I do NOT want to sit down for half an hour before I rush off and plan a 'route' across country.
So, heading from Ledbury to Swindon for the weekend it takes me straight down the 417 to the Gloucester ring road. Sheila's 590 by contrast, routes her A417 and then onto M50 & M5 to rejoin the 417 at Hucclecote. This is not traffic nor time of day dependent on either unit. Sheila's unit invariably puts her up the B wotsit to Newent coming the other way but she just ignores it and lets it recalculate.
Talking of Google maps, as a useful (if you are in the car) aside they have recently changed the way the traffic jam 'traffic light' system displays delays, or I have never noticed this feature before. It has always had the red and amber colouring to denote bad and tolerable delays but now, if you look closely, each colour has a series of scrolling darker red/amber blobs within the main colour stripe. This scrolling blob is actually the true'ish speed of individual vehicles within a queue although not one blob per vehicle. Obviously
This is a truly groundbreaking feature as within a red zone the traffic could be anything from gridlocked and stationary to trickling slowly along.
Amazeabubles...