I agree with the comments that a non-red extinguisher will most likely be ignored and therefore rendered useless in an emergency. In addition, in many countries extinguishers must be red.The ones shown would be illegal.Mounting under the floor is good, except for requirements that it be "easily accessable" in an emergency. Don't know if that would apply. The footwell is accessible, but significantly detracts from both looks and comfort. What would be nice would be a sliding bracket using the area under the seat.However, I don't know how practical that would be either.Bottom line is that the extinguisher is in the rear compartment except when travelling in certain countries, where then it is moved to the open part of the baggage compartment.