A total of 804 vehicles were set aflame in all of France on New Year's Eve, a 14.5 per cent decrease from the previous year, Interior Minister Bernard Cazeneuve said on Twitter Friday.The 2014-2015 celebrations saw 940 cars burned.Burning automobiles as a way to ring in the new year has grown into a trend in recent years, with mostly young men using it as a form of protest.The ministry said 622 people were taken into custody by French authorities over New Year's, twice as many as a year before.The New Year's Eve celebrations took place amid a heavy police presence seven weeks after the November 13 terror attacks in Paris.