Lengkepan kalimah di handap ieu: Aplikasi saterusna tina drive roda hareup éta supercharged &lt;a href="Alvis%2012/50"&gt; Alvis 12/50&lt;/a&gt; mobil balap dirancang ku George Thomas Smith-Clarke jeung William M. Dunn of Alvis Cars of Britania Raya. Ieu kandaraan asup dina 1925 Kop Hill Climb di Princes Risborough di Buckinghamshire tanggal 28 Maret 1925. Harry Arminius Miller ti Menomonie, Wisconsin ngarancang mobil balap roda hareup Miller 122 anu asup dina
1925 Indianapolis 500, nu diayakeun di Indianapolis Motor Speedway dina Saptu, 30 Méi 1925.