And NB, which is touting the product as ideal for PR executives scampering between two-bottle journo lunches and demanding clients, is calling on PRWeek readers to act as guinea pigs.
Zingo identifies the location of anyone calling it from a mobile. The nearest Zingo-equipped taxi should then turn off its 'for hire' light and collect the passenger, who will pay a £2 premium for the luxury.
Readers eager to test whether it works should log on to zingotaxi.co.uk.
They can have a mind-blowing 60p cut from the £2 surcharge.