P173 CJEFAX 173 Sat 9 Apr 00:45/48     FROM   NEWSROUND  SOLAR CARS TRY TO BEAT COLD WEATHER A group of solar-powered cars will set off this weekend to try to prove that the vehicles can work well in cloudy weather. The four environmentally-friendly cars will race from Germany to the Netherlands. However, without extra power from batteries, the maximum speed they (5 can reach in overcast conditions is just 30 mph. It could bj a very long journey for them all!  Contacts 176 PP Info 177 Sport 300 Next News Contacts PP Info PP Rjpts