Karl,
The unit is very light but the plastic seems strong. The plastic doesn't deflect when you push against the case. The devices isn't meant for offroad (like on an ATV or dirt bike), but should be ok if it is in your truck. The suction cup mount is really strong. Even when I push the lever to take it off, I still have to stick my nail under the suction cup to break the seal. I kind of have it hard wired into a 12V conection. I installed a second 12V input under the buried it under the center console. Then I routed the power cable of the Nuvi underneath the center console to the new 12V connector. The speaker is on the back of the Nuvi so you don't have the problem like you would on the 2720. I didn't want to cut the power cable as it is about 30-40 dollars to replace and it was brand new
Yes it does have the 3-D view with Track Up. I was playing with the unit earlier and changed settings without remembering to change it back. I like this view. Be warned that the Nuvi does zoom in when you get to your turn. Some people have expressed their hatred for this "feature" but I don't mind. I'm not utilizing the screen to know what my turn is. I'm depending on the voice to tell me what street to turn into since this keeps my eye on the road and isn't that what a VOICE Navigation system is for? Who knows, this is my first Navi so I may not know the ins and outs just yet.
So let me know when you guys go offroading in your neck of the woods, I need an excuse to try this out on a long distance trip