One in six motorists tested by police is caught driving with drugs in their system on South Australian roads, where detection rates have surged more than 140 per cent in a decade.New incentives for skilled foreign workers to live in Adelaide instead of Sydney or Melbourne would be launched under a State Government proposal to overhaul Australia’s visa system to boost the economy after COVID-19.Adelaide’s red-hot property market shows little sign of cooling down just yet, with the cost of buying a home jumping another 2 per cent in April.And the CBD and North Adelaide continue to struggle with office vacancies, with large numbers of people still working from home despite the easing of restrictions in the wake of the COVID-19 pandemic.For updates and breaking news throughout the day, take out a subscription atadvertiser.com.au