  The gravitational collapse of cylindrically distributed perfect fluid is
studied. We assume the collapsing speed of fluid is very large and investigate
such a situation by recently proposed high-speed approximation scheme. We show
that if the value of the pressure divided by the energy density is bounded
below by some positive value, the high-speed collapse is necessarily halted.
This suggests that the collapsing perfect fluid of realistic ideal gas
experiences the pressure bounce. However even in the case of mono-atomic ideal
gas, arbitrarily large tidal force for freely falling observers are realizable
by setting the initial collapsing velocity exceedingly large. In order that the
high-speed collapse of cylindrical perfect fluid forms spacetime singularity,
the equation of state should be very soft.
