The reason? Because (non-religious) Israelis with cell phones were walking or bicycling on the nearly empty major roads and Google saw that they were traveling very slowly (compared to normal car speeds.)
(h/t Yenta Press)
UPDATE: Video:
Buy EoZ's book, PROTOCOLS: EXPOSING MODERN ANTISEMITISM
If you want real peace, don't insist on a divided Jerusalem, @USAmbIsrael
The Apartheid charge, the Abraham Accords and the "right side of history"
With Palestinians, there is no need to exaggerate: they really support murdering random Jews
Great news for Yom HaShoah! There are no antisemites!