My kids turned the backseat into a snack graveyard. Do small car vacuums actually work?

Every single day my kids turn the backseat into a literal warzone of crushed Cheerios, Goldfish, and random dirt. dragging the heavy shop vac out of the garage is just too much of a pain for a few seconds of cleaning. im trying to find the best handheld cordless vacuum for car crumbs that I can actually just keep in the vehicle. most of the cheap stuff on Amazon has zero suction and loses charge immediately.
someone recommended the hoto autocare because its tiny, basically the size of a water bottle, so I could just keep it in the front seatback pocket. on paper it says 20k Pa suction which seems decent for its size, but I am skeptical. does anyone know if it actually gets those deeply embedded chip crumbs out of tight car seat crevices, or does the battery suck?