идти гладко(не только о делах, но и дорожном движении: Highway 1 conditions getting worse East of Port Mann bridge. Smooth sailing through Vancouver/Burnaby, then snow covered roads.ART Vancouver)
идти как по маслу(не только о делах, но и дорожном движении: Highway 1 conditions getting worse East of Port Mann bridge. Smooth sailing through Vancouver/Burnaby, then snow covered roads.ART Vancouver)
лёгкая прогулка(He just kept talking and talking his nonstop sunny talk about what a great summer we were going to have and that he had tons of plans and that we would get caught up as father and son and soon all our rough past would be behind us and we would have nothing but smooth sailing for our future.george serebryakov)