Catching a lift has never been easier, thanks to e-hailing ride service Hailo. The free iOS and Android app connects ready passengers with Hailo taxi drivers, who are licensed and insured for their city’s regulations. Paying is a snap, too, thanks to secure stored credit card info. The U.K.-conceived service is now thriving stateside in cities like New York, Chicago, Boston, Atlanta and Washington, D.C., so it almost makes whistling obsolete.