Known. A man's grave held a two-wheeled chariot.
The grave is at Sirolo, in central Italy, near the I Pini burial ground. It dates to the 6th century BC. The chariot, called a currus, was placed in the pit. The grave also held a bronze helmet, an axe, and other weapons. Large bronze containers were still closed with pottery lids. They held animal bone, bits of pots, and other remains. A ring of wooden posts enclosed the monument, with small sets of pot scraps in the post holes. Beside the chariot grave was a woman's burial, with traces of cloth, shoe parts with metal, many brooches, and a large brooch with an amber core.
The page does not say what is still argued.
https://www.ancient-origins.net/news-history-archaeology/picene-prince-chariot-tomb-00102954