Hi. I print & cut magnetic party invitations from printable magnetic sheet on a Silver Bullet cutter.
I don't know how thick your vehicle signs are as I've never done that type of thing, but my cutter whizzes through 690gsm magnetic sheets like a hot knife through butter! One cut, right through, on less than half maximum pressure, and a cutting speed of 300mm/s (just under half the SB's max speed of 800mm/s). Blade wear is minimal. I've cut thousands of these invitations in the last 2 to 3 years and only onto the second blade!
These are my mockups, (all my 'proper' pictures have customers personal details on), but they look identical in real life ...
https://www.dyesubforum.co.uk/vbforu...tid=5775&stc=1