I saw a pic with i assume photoshop, if not someone modded a M134 ( minigun ) into each gull wing door of a tesla.
That was superior stopping power, though not on the Tesla, but any car in the cross hairs would be Swiss cheese in seconds.
BUT ! given the chance to pick up a couple of M79 grenade launchers ( dont even need the nedfangled models ) well i would take that deal if it also included a not unsubstantial number of the grenades.
I once tried to fell a ok sized tree ( dead tree ) about 8 - 9 inch in diameter, using shotgun with slugs, it took more shots then i expected i have to admit.
Was OK though at that time i had so many slugs for shotgun i started making a 12 gauge minigun, that granted i never finished as i had some extraction issues at higher RPM, and you of course want high RPM on a gatling gun style weapon.
Also it was in the end of my apprenticeship, and my next job at the local ship yard, well a too large project to smuggle into the work space, even in the pieces i had to take it apart it to get it out of my job at the railroads.
When i threw it out years later, the guy at the scrap yard did take a #2 look at the barrel assembly, i said dont worry its just a toy mock up, and the guy crushed it and gave me monty to buy a beer or two for the iron.