Mojo – you may wish to consider that just like her Lot, the pavement / floor of the Owner’s carspace is still Common Property, and as such she cannot permanently fasten anything to it without the prior written consent of the Owners Corporation (O/C).
I don’t wish to confuse matters prior to your O/C seeking some expert legal advice, but as an alternative to a grant of exclusive use it is possible under the provisions of Sect 65B for the O/C to grant a licence to the Owner for her use of that section of its Common Property. At least a licence can be regularly reviewed, amended, and indeed cancelled by the O/C upon reasonable grounds without the requirement for that Owner to give the prior consent that’s mandated when a grant of exclusive use exists.
At least in that way the O/C can’t be judged obstructionist, and can buy some time to assess how things pan-out with the Owner’s business venture by, figuratively speaking, dipping its collective little toes into the water before jumping straight in to the exclusive use pool; just a thought!