Doesn't make sense.
The cheapest 120GB SSD you can get now is around $20. So lets assume this "cartridge" works off an M.2 type interface and form factor and allows speeds for up to 600MB/s..... no matter what, such a cart will cost at least $8 or so. As opposed to around $2 for a disc.
Its a interesting concept though and will better than using discs..... but that cost.