I just took my first road trip on our AGT and my battery only charged to 457 miles max (not even close to the 518 range). On our way back the car put in the map a charging station but we never made it there. Had to stop 15 miles before reaching the charging station because we only had two miles left to drive. We got lucky and found a Hilton with a free Level 2 charger. It took us an hour and a half to get a 20 miles charge to make it to our original Super Charger destination. Is this normal? Has anyone noticed a similar situation with their cars? Does anyone actually get 518 miles when fully charged at 100%?