Question: since apple has difficulty keeping personal hotspot up and running, I’m looking for a mifi unit. Reason is that my tomtom has live traffic info, and I’m one of those guys that thinks: when it’s there... use it. TomTom states that using MyDrive would work, but it simply doesn’t. So I’m looking for a mifi unit, hook it up to USB port beneath passenger seat and off we go. Anybody any experience? Would be great if USB is only powered when contact is on.