While UberX pilot begins in Dubai, the rival company, Careem has already made available to its users- Careem GO. Though the new service doesn't give you a 'ride later' option, the prices for 'ride now' make it worth your interest, unless you don't travel non-luxury. Customers can book GO to be picked up in a Toyota Previa, and pay much less than Careem Economy. 

The trial is going to be three-months long just like UberX and a final verdict will be out at the end of the trial period, about whether Dubai users get both UberX and Careem GO or one of the two or none. Till then, we can enjoy the cheaper rides.