Perhaps others didn’t reply because like me they haven’t found a good car vacuum. I have tried qute a few over tme and been disappointed in them all as they don’t have the suction to clean below the surface… I wouldn’t waste my money or time with one now. Also, my experience is that the batteries don’t seem to last and are either very expensive or impossible to replace.
I never felt the car was clean after using the car vacuums, and I proved this once by re-vacuuming using the home vacuum. Since then when cleaning the inside of the car, I take our home vacuum cleaner out and sit it outside the car. The hose reaches in and I use the various attachments to access all the various nooks and crannies.
As you have specified you don’t want an electric one, I can only assume that you don’t have a power point near where you would clean the car, or you would need to carry your home vacuum a long way to the vehicle.
In my opinion if you can, save your $99.