Sonex and its follow - on aircraft have a common lineage to the VW engines of the Sonerai and simple aluminum construction of the Moni and Monex .
John Monnett went on to found a new company , Sonex Aircraft .
Sonex Aircraft and company 's follow - on aircraft have a common lineage to the VW engines of the Sonerai and simple aluminum construction of the Moni and Monex .
John Monnett went on to found a new company , Sonex Aircraft .