Saphyroo Platform
The transport operating system.
The tension: the hook rejects the boardroom frame, then "operating system" adopts the most boardroom word there is. Ends on the bigness you flagged as too SaaSy. Reads as charisma to a warm reader, as a contradiction to a cold one.
Saphyroo Platform
Built where fleet is hardest.
The fit: closer extends the operator-built idea instead of pivoting away from it. One consistent tone, no contradiction. Double "Built" reads as deliberate anaphora.