bridged ignition coils

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jolyon Vater Cox by way of Terry Fritz <teslalist-at-qwest-dot-net>" <jolyon-at-vatercox.freeserve.co.uk>

I am enquiring as to the possibility of driving a couple of ignition coils 
off an H-bridge
with  LT inputs in anti-parallel and the HT outputs in series
so that the total HT voltage is doubled.
Can this be done, and is it a good technique -or don't ignition coils work 
so well in this configuration?