Originally Posted by Hooah
You completely forgot the key part.. it's only while you are in your car. 78 days / 365 days = 21.3% of the time. unless you are in your car for 5 hours a day, every.single.day (holidays, weekends, etc etc), you won't use all that up in under a year. And assuming our 30mph, you'd have gone 56,721.9 miles (1890.73*30)..
Do you really travel 56K miles/year?
No. Therefore 100GB will last you over a year. Assuming you travel the avg 10-15K miles per year (so 12,500 miles we'll say), that would last you 4.5 years.
..not 78 days.