Most useful tool for Drive Test

Dear experts,
I want to ask about the most useful tool for Drive Test, not complete chain TEMS or probe…
I want a tool that you can fix in car and you get the result live and in the same time in the office to process it?
It will be automatically and live for example you can fix it in Taxi or Bus?
Another point: what about companies that can do post processing remotely?
Thanks in advance for your suggestions and advices.

You can use PHU (Huawei Mobile PHU - GENEX Probe Handset Unit).
The whole solution can give you the service you’re looking for.