Apps like yours are promising, good luck to you.
Is Denmark mostly flat land? Ideally altitude changes should factored in, along the chosen route.
I like the weather data tie in feature.
Tying in tire pressures would be helpful.
You'd need a units conversion for the States.
'12 SL last reading @ 2 yr, 22k, 260 GIDs, 62.35 Ahr
'15 SV w/QC, Mfd 5/14, Leased 8/14, 292 GIDs, 64.38 Ahr when new
@ 25 months, 25k, 267 GID, 56.88 AHr
@ 36 months, 34k, 270 GID, 57.49 AHr6.72 kW Array