POZNAN, Poland — The first solar-powered car to travel around the world ended its journey at the U.N. climate talks today, arriving with the message that clean technologies are available now to stop global warming.

The small two-seater, hauling a trailer of solar cells and carrying chief U.N. climate official Yvo de Boer, glided up to a building in Poznan, Poland, where delegates from some 190 nations are working toward a new treaty to control climate change.

"This is the first time in history that a solar-powered car has traveled all the way around the world without using a single drop of petrol," said Louis Palmer, the 36-year-old Swiss schoolteacher and adventurer who made the trip.

"These new technologies are ready," he said. "It's ecological, it's economical, it is absolutely reliable. We can stop global warning."

Palmer's appearance at the conference marked the end of a 32,000-mile journey that began 17 months ago in Lucerne, Switzerland and took him through 38 countries.

The car, which runs noiselessly, can travel up to 55 mph and covers 185 miles on a fully charged battery.

Palmer said he lost only two days due to breakdowns during the journey.

"This car runs like a Swiss clock," he said.

He calls his vehicle, which was developed by scientists at Swiss universities, a "solar taxi" because he has given rides to about 1,000 people — officials and regular folk alike — to convince them of the technology's viability.

Passengers have included New York City Mayor Michael Bloomberg and U.N. Secretary-General Ban Ki-moon.