If it logs your miles from a text message, that's a bit more complicated than a website.<p>SMS to web gateway, process the data, update the database, connect database to website, make functional website.<p>These are not super complicated on their own, but having them work together well and meet user expectations/needs is another matter.<p>He can then sell the service or advertising on the page. Sounds like a startup business to me. Not huge or sexy but money in the bank if done well.