Don't count on it- you can keep an EM signal in cone measured in percentages of MOA, and when I've seen information on the earlier prototypes of this system in the past they had the effective range under 30 feet. This isn't exactly a new concept, it's just been flaky from a maintenance perspective, bulky, power intensive and expensive. If they have been able to beat those three points, it is good to roll as far as I'm concerned. More effective than spikes, safer than the PIT. Even if you don't take out the ignition or the fuel injector, if the fuel pump goes they are pretty much done.

As for the pacemaker issue, they are shielded by the body. You are a bag of mostly water- water is a great EM absorber. When you add in the degree to which the pulse is constricted and the low power, there are only two ways in which this could have a chance to effect someone- they are in the target car, or you are aiming it at pedestrians. The later is no different than aiming a weapon (or a moving car) at a ped. The former... By and large people with pace makers aren't going to be needing to be hit with one of these.

I remember the "it might cause an accident" BS was raised in Vermont when spike strips were first introduced, to. Or people with pepper allergies. Or the chance of someone being hit with a Taser who might have a heart condition. Specious argument- this isn't for a simple traffic stop, something like this wouldn't get used unless you've had plenty of chance to give up.