I changed the internet maps of my city by adding additional illegal roads so that my taxi fare would be lower.
Why would you go to such lengths for lower fare? Isn't that illegal?
I think the risk was worth it.
You should be spending as much as you need on the taxi driver, their job is already hard enough without you cheating it for everyone. What you are doing here will inconvenience a lot of people and you should stop now, unless you want everyone to dislike you.
The driver already said it was all right.
I don't even think you told them the truth. They have to cover fuel and car repairs, it is horrible to cheat people doing an honest job. Why don't you buy your own car then?