Who said that chat bots were gimmicks? Certainly not DoNotPay's Joshua Browder. He recently noted to VentureBeat that his service's AI-driven virtual lawyer has successfully contested 160,000 parking tickets in London and New York City in nearly 2 years of service, saving drivers millions in the process. It's not the most complicated bot, as it's really just asking simple questions about the circumstances of the ticket and walking you through the appeal. However, it's both effective (it successfully challenged 64 percent of tickets) and, importantly, free -- you don't have to pay a real lawyer to dish out advice.