1 · The car they brought in for service
2 · How far do they drive in it?
miles a year
3 · The ID. to compare it with
A month of driving, their car vs an ID.
Over a year
The real monthly cost (optional: add what they pay now and the ID. payment)
For salespeople talking to service customers. Works fully offline: keep this file on the iPad or laptop and open it in the browser. No internet needed. Settings you change are kept on this device.