>But, because it hasn’t got the 360-degree coverage of a rooftop tower, you’d need four units, one for each corner of the car. The technology is certainly inte

>But, because it hasn’t got the 360-degree coverage of a rooftop tower, you’d need four units, one for each corner of the car. The technology is certainly interesting and it does have its advantages, but the need to use 4 of these units, for complete coverage, isn't exactly going to make it cheap.