  To gain more insights about what could be the source of the Alcubierre warp
drive, a technique designed to find an orthogonal basis from the metric
expression is used. It is deduced that exotic fluids can produce the same
stress-energy tensor as the Alcubierre warp drive. For different configurations
of warp acceleration and velocity, constraints on density, pressure, total
positive mass, total negative mass, absolute value of the equation of state as
well as null-energy condition violation are provided. The Alcubierre warp drive
Einstein tensor expression and the optimization of fluid properties result in
power laws between various physical quantities and warp velocity. The
investigated setups exhibit non-exotic equation of states for warp velocities
smaller than 0.004c and seem able to sustain warp velocities up to 2200c with
exotic equations of state.
