Er.... Isn't that the exact method that Rick Steinbeck describes the DY100, DY300 and DY500 Class sub light ships use in the 1979 Space Flight Chronology??

Star Trek TOS roughly predicts the future/present once more.

I liked the arguements about the exhaust products and the fact that not one person spotted the fact Solar Wind would blow them out of the Solar System just likeit does comet tails and other low mass debris.
NASA has planned Solar Wind sailing ships and probes in the past, knowing just how powerful this force actually is.
Also 10% of light speed would allow an unmanned probe to reach Alpha Centuari (3.97 LY) in around 30 years, although it would take 4 years for the telemetry to reach Earth from the mission!!