They (SilverTop Taxis) said it couldn't be done. They said I could provide my own as all taxis have bolts. The thing is: if you are catching a taxi it usually means you are on foot. How was I meant to lug around my car seat at my destination and carry my toddler and hold the hand of my 4yo. I look forward to the day when every taxi has built in baby seats. The current 'system' is just wrong.