I'm not sure if there is an SD or others
You didn't look?
but if i want to record or save the data on microcontroller (of Arduino mega2560)!!
You've got 8K of SRAM. You can save some data. Whether you can save 80 seconds worth depends on how often you are saving (once a second, once every 10 seconds, etc.) and how much data you are saving each time.
and about output the data (path), how to take it as hardcopy ? (maybe first using Serial.print())!!
What path are you talking about? If you are talking about GPS data, there is NO path. There are bunch of discrete latitude and longitude values.