I think syncing to gps is quite possible, dunno for your other wishes. One thing I would like to do when I have time (but I'd be grateful to others if they do as well) is adapting the very good Maemaps page in http://www.tomch.com/maemaps to javascript streetview (now it uses flash, which doesn't work). This already has gps positioning (but might not have continuous tracking).
Also, the guy who could bring us what you're looking for is Fcrochik with his geeps. We talked about it and he said geeps is kind of a web browser, and it's possible to add the javascript part to show streetview. So asking him might be the thing to do