When you travel long distances we want to provide you with an excel calculation spreadsheet that give you the optimal speed you should travel in comparison to the total time to be traveled during one day. If you stay over night then you just have to observe the remaining reach with the remaining distance to final destination. At the overnight location you for sure should have a charging station. If you have to charge during the trip then you can use the spreadsheet.
Enter google distance Distance> ? miles
Enter Start Miles 210 (This are the remaining miles on your car display)
Enter End Miles 20 (Always keep at least 20 miles reserve)
Enter Start Elevation 958.0 Ft (at starting location)
Enter Elevation Max 4133.0 Ft (maximum elevation during trip)
Enter Recharge Type 1 = 120V-15A(1.8kW), 2 = 240V-30A(7.2kW), 3 = 240V-40A(9.6 kW), 4 = 240V-70A(16.8 kW), 5 = 387V-250A(97kW)
After the entries check the green section in hours. Now you can decide if you want to drive longer and wait shorter or the other way around. At charge type 4 and above you might already maximum speed possible on US highways. Please consider that sometimes a scenic road might be longer, but the elevation climb is lower as on an interstate highways. If you decide anyway to drive slower you can also this non interstate highway. This is for example the case between Phoenix and San Diego.
Download the spreadsheet by click in the link below. The calculation of the Model S is more based on an estimate.Model S speed and consumption Roadster speed and consumption