Wheelchair bicycles it's very comfortable for transport someone place to another place in a wheelchair but like a bike.I ts have 2 modal velo wheelchair and opair wheel chair. The passanger seat is front of biecyle and it is adjustable and wheel chair section easliy dicconect from biycle.

Pros

Comfartable for wheelchair and normale bike user
Helpful and good intrection btween 2 people
Third party not involve in it
Envirmently friendly

Cons

Never seen