Task Scheduler with Virtual Accounts, possible?
No you cannot. Virtual Service Accounts are designed to run Windows Services and that's it. A Virtual Service Account has its own SID and Windows periodically and automatically changes the password of the VSA for security. The account can be assigned access control entries on an ACL. However, the account is not even stored in the SAM registry hive, which is why you won't see the account in most administrative tools.
From Chatper 6 of Windows Internals, Sixth Ed., by Mark Russinovich, David Solomon and Alex Ionescu.
Edit: It should also be noted that if a Virtual Service Account, which is running a Windows Service, attempts to access a network resource, it does so using the account of the computer it's running on, such as [email protected].