Bavarian

Lots of pictures of the visit are on Sportowy Fakty https://sportowefakty.wp.pl/zuzel/zdjecia/galeria/19390/prezydent-andrzej-duda-z-wizyta-u-bartosza-zmarzlika

For all who still doubt the status of speedway in Poland, take a look here. This is the Polish State president Andrzej Duda, who on Friday visited the home and workshop of world champion Bartosz Zmarzlik ! https://www.speedwaygp.com/news/article/8278/polish-president-visits-zmarzlik-Workshop

Will Lokomotiv Daugavpils be allowed to take part ?

This "Velodromo Vigorelli" stadium is in Milan https://en.wikipedia.org/wiki/Velodromo_Vigorelli

Yes, it seems they have run their "speedway" meetings on the long-track.

At the moment, yes, but not for very much longer. German borders will be re-opened again in mid-June.

The UK based riders could still earn some extra money by riding in the Swedish or Danish leagues (equally affected by the Polish demands of one rider one club) and would be more than welcome to race speedway and long-track here in Germany, as did nearly all of the top British League speedway riders back in the 1970s and '80s. Some co-operation between the UK, Sweden, Denmark, and Germany, would strenghten our position against the Polish threat.

I always thought that Homburg/Saar had a speedway track rather than a long-track, but from the information given by @iris123 it is obvious that there was long-track racing at Erbach from 1951 on. But could there have been another track, a proper speedway track, somewhere else in Homburg? It would really be interesting to know where a pukka speedway track could have been ? FC08 Homburg's Football ground, the "Waldstadion", looks very very likely. Perhaps @Gustix can help us with more info. I seem to recall that he was there with the English team in 1958. By the way, it is interesting to know that after WW2 the Saarland was NOT part of Germany, but a French Protectorate with self government from 1947 til 1956. They participated under theri own flag at the 1956 Olympics, and had their own national teams in football and other sports. (West-)Germany played against the Saarland twice in their qualifying group for the 1954 FIFA World Cup. On January 1, 1957, the Saarland was reunified with the rest of (West-) Germany. https://en.wikipedia.org/wiki/Saarland

The correct spelling of the rider's name is René Elzinga He was the Dutch National Speedway Champion in 1989 and 1991 There is even an action video of Rene Elzinga on YouTube, causing a heavy crash in heat eight of a 1988 World Team Cup meeting at Wiener Neustradt in Austria. Riding in white is René Elzinga for the Netherlands, in yellow & black is Heinrich Schatzer for Austria, in red is Ingvar Skogland for Norway, and in blue is Alan Rivett for New Zealand.

and mine arrived on time as usual on Friday noon here in Bavaria No problems at all

... and here is the link to the Speedway Researcher website http://www.speedwayresearcher.org.uk/