Okay, what I was looking for is a five minute long (or longer) ascii log of NMEA sentences which are "recorded" while you drive the car (and later can tell the city and some street names). The idea is that I could use the log file as an input to the navigation software so that it simulates the situation of driving in the US. That way I would have a chance to test something here without going to the US for gathering the GPS data

Got it. I will get you something tonight. I am not sure if the datum on my GPS (Garmin eTrex) can be adjusted. I will have to check that.

-Mike